NFC协议的模糊测试优化方案

针对NFC协议进行模糊测试方案时产生大量不符合协议规范的无效测试用例而导致测试效率较低的问题,应用图论思想,提出了基于生成的策略与深度优先算法融合后的模糊测试方案。在基于生成的策略下构造测试用例的过程中,遍历由协议规范连接成的测试需求图,以深度优先算法搜索图中覆盖点较多的生成路径,精简测试用例的生成路径,保证生成的测试用例能够接近协议规范。实验分析表明,所提出的模糊测试方案能够有效地减少无效测试用例的生成,提高测试效率。     

奥贝胆酸有关物质的分析及合成

为了控制奥贝胆酸药品的质量,从奥贝胆酸原料药中分离并鉴定了3种有关物质:3α-羟基-6-乙基-7-酮-5β-胆烷-24-酸(A),3α,7α-二羟基-6-亚乙基-5β-胆烷-24-酸(B)和3α(3α,7α-二羟基-6α-乙基-5β-胆烷-24-酰基氧基)-7α-羟基-6α-乙基-5β-胆烷-24-酸(C)。分析了这些物质产生的原因并进行了设计合成,其结构经过核磁共振氢谱得以确认。研究表明,3个有关物质与奥贝胆酸粗品中的主要有关物质的相对保留时间完全一致,合成的有关物质与分离得到的有关物质的核磁共振氢谱图相符合,可以判定奥贝胆酸产品中的主要有关物质就是合成得到的有关物质A、有关物质B、有关物质C。解决了有关物质研究所需对照品的问题,提高了原料药的质量,为奥贝胆酸的质量研究和有关物质的控制提供了一定的帮助。     

Urban air pollution in China: destination image and risk perceptions

Inbound tourist arrivals into China have been declining in recent years, possibly in response to increasing levels of urban air pollution. To examine Westerners’ contemporary views on China as a travel destination, with a particular focus on air pollution, this research surveyed 600 US and Australian residents. An online panel survey collected data on cognitive and affective destination image, cognitive and affective risk perceptions, intention to visit China and key demographic variables. The findings show that, while China's cognitive image attributes were perceived positively, potential travellers expressed negative views about travel risks in China in general and about air quality in particular. Importantly, feelings towards the risk of air quality had a significant negative impact on destination image as well as intention to visit China. The research contributes to theory by highlighting the importance of considering affective risk perceptions in destination image studies. While some market segments seemed less sensitive to air pollution than others, this paper concludes that unless China proactively addresses the problem of air pollution, for example by seeking to stimulate positive feelings, international arrivals may continue to be compromised.     

Using a network data envelopment analysis model to assess the efficiency and effectiveness of cultural tourism promotion in Taiwan

The importance of tourism promotion has been discussed throughout past studies, and the consequences of ineffective promotion have also been investigated. While tourism promotion is a topic of interest to many researchers, performance measurement used to assess the effectiveness of tourism promotion is a topic seldom discussed. The purpose of this study is to develop an approach based on the data envelopment analysis (DEA) model to evaluate performance for tourism promotion. The main difference compared with previous DEA models is the evaluation of multiple efficiencies in a single DEA implementation, and the assessment of overall efficiency in a ratio index. In the assumption of variables, we use cultural tourism promotion as a foundation in formulating the empirical evaluation, and we test the proposed model by using data across 20 regions in Taiwan.     

Non-financial hurdles for human capital accumulation: landownership in Korea under Japanese rule

This study examined the relationship between land inequality and human capital accumulation in the Korean colonial period by using a panel data set from 1934 to 1942. Evidence of the adverse relationship between land inequality and the accumulation of human capital has thus far only been presented by using data from Western countries and from countries that achieved industrialization not under colonial occupation but by their own economic interest. The presented findings thus contribute to the body of knowledge on this topic and confirm the generalizability of the Galor model by analyzing the unique Korean context under Japanese rule in the early twentieth century. It is the first study to present evidence that inequality in landownership had an adverse effect on the level of public education in the Korean colonial period (i.e., it is a non-financial hurdle for human capital accumulation). By using a fixed effects model and a fixed effects two-stage least squares model with an instrumental variable estimation, this study exploits variation in inequality in land concentration across regions in Korea, accounting for the unobserved heterogeneity across these regions. Overall, this analysis establishes a highly significant adverse effect of land inequality on education in the Korean colonial period.     

创业公司如何在大公司面前“虎口夺食”?

我一直对苹果的产品情有独钟,2007年9月我买了第一代iPhone,但是发现手机里的照片和备忘录等都没办法拷贝到电脑中。为了解决这些问题,我自己利用业余时间写了几个小程序,从10月份开始陆续上传到了威锋网上,并最终把这些工具的功能集中起来,开发了一款名为     

Fuzzy Rasch model in TOPSIS: A new approach for generating fuzzy numbers to assess the competitiveness of the tourism industries in Asian countries

This study proposes a novel approach, the Fuzzy Rasch model, which combines Item Response Theory (IRT) and fuzzy set theory. This paper applies the Fuzzy Rasch model in Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) to analyse the Tourism Destination Competitiveness (TDC) of nine Asian countries: China, Hong Kong, Japan, Korea, Malaysia, Singapore, Taiwan, Thailand and the Philippines. The study was conducted in 2009 using 6 criteria and 15 indices. The results demonstrate the feasibility of applying the Fuzzy Rasch model in TOPSIS to analyse TDC in Asian countries. In addition, the proposed model also provides an effective means of applying the MCDM method to study TDC. Furthermore, in 2009, the Asian countries were ranked from most to least competitive as follows: China, Japan, Hong Kong, Malaysia, Thailand, Singapore, Taiwan, Korea and the Philippines.     

论建立邮政电子商务招商机制的策略

文章分析了邮政电子商务发展的急迫性,从供应角度论述了建立邮政电子商务招商机制的必要性以及邮政电子商务招商的优势和策略,以期加快邮政电子商务的发展。     

A stochastic cost efficiency analysis of international tourist hotels in Taiwan

The one-stage stochastic frontier approach (SFA) is used in this study to simultaneously estimate cost efficiency scores and factors of cost inefficiency for 66 international tourist hotels in Taiwan during 1997–2006. An SFA model with three outputs and three inputs is defined. The three outputs are room revenue, food and beverage revenue, and other operation revenue while the three inputs are price of labor, price of other operation, and price of food and beverage. This model also takes into account five environmental variables, including dummy variable of the hotels located in non-metropolitan area, dummy variable of chain hotels, the number of tourist guides, the minimum distance from each hotel to Taoyuan international airport and the minimum distance from each hotel to Kaohsiung international airport. Empirical results show that international tourist hotels in Taiwan are on average operating at 91.15% cost efficiency. All nominal variables are transformed into real variables in 1997 prices by GDP deflators. Chain systems, tourist guides, and international transportation can significantly improve the cost efficiency of international tourist hotels in Taiwan.     

The impact of product placement on TV-induced tourism: Korean TV dramas and Taiwanese viewers

This study examines of the ways in which Korean TV dramas affect Taiwanese consumers’ attitudes toward the locations where the dramas are filmed (onscreen locations). Previous studies have incorporated balance theory into product–character association models and have demonstrated that consumers tend to align their attitudes toward products with the valence of a character’s attitudes toward the products. Unlike previous studies, this article attempts to investigate the product–character association model in a cross-cultural setting where the ‘products’ considered are the onscreen locations. To account for the effect of similarity between Taiwanese culture and Korean culture, the concept of perceived cultural proximity is introduced into the balance-theory-based model. The results show that consumers’ parasocial relationships with a character and consumers’ attitudes toward the character are related to their attitudes toward the location. However, this relationship is significant only for those viewers with high perceived cultural proximity between Taiwan and Korea.